Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed.
On the diesel Passat, the TDI badge stands for Turbocharged Direct Injection, which isn't really all that helpful as the gasoline-powered Passat is also turbocharged and also uses direct injection. Volkswagen attempts to clear this up by calling this Passat the Passat TDI Clean Diesel.
Answer   GT stands for Grand Touring and TDI stands for Turbo Diesel Intercooled   Answer   TDI actuly stands for Turbo Direct Injection   Answer  â¦  Turbocharged Direct Injection (TDI) is the name VW use to describe their modern turbocharged diesel engines. Answered. In Land Rover.